CN104005995A - Double-cylinder sectional type horizontal multilevel centrifugal pump - Google Patents
Double-cylinder sectional type horizontal multilevel centrifugal pump Download PDFInfo
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- CN104005995A CN104005995A CN201310493404.4A CN201310493404A CN104005995A CN 104005995 A CN104005995 A CN 104005995A CN 201310493404 A CN201310493404 A CN 201310493404A CN 104005995 A CN104005995 A CN 104005995A
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- pump
- sectional type
- type horizontal
- double
- end bearing
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Abstract
The invention relates to a double-cylinder sectional type horizontal multilevel centrifugal pump. The double-cylinder sectional type horizontal multilevel centrifugal pump comprises a drive-end bearing part, cylinders, a suction box, a guide vane middle section, impellers, a pump spindle, a balanced pipe part, a pump cover, a balancing mechanism, a drain pipe, a non-drive-end bearing part, wherein the inner cylinder of a sealing box located at the terminal end of the drive-end bearing part is fixedly connected to the end plate of the sealing box; the end plate of the sealing box is fixedly connected to the cylinders. Guide vanes in the pump and the middle section are of an integral structure; the positive guide vanes and the suction box are of an open structure. The double-cylinder sectional type horizontal multilevel centrifugal pump is compact in structure, more convenient to install, maintain and detect, reliable in operation and high in efficiency, is suitable for transporting products of petrochemical engineering and other chemical industries, high-temperature and high-pressure mediums and mediums with corrosiveness or flammable and combustible characteristics, can serve as a big-flow high-temperature and high-pressure boiler water supply pump and a diesel hydrogenating and feeding pump.
Description
Technical field
The present invention relates to a kind of centrifugal pump, especially a kind of for delivery of High Temperature High Pressure, there is the double shell sectional type horizontal multi-stage centrifugal pump of corrosivity or inflammable and explosive characteristic medium.
Background technique
At present, Double-casing horizontal type multi-stage pump adopts stator and stage casing split-type structural, sucks letter body and adopt closed type structure in pump, as implemented pressure lubrication, is direct employing lubricating oil station to lubricating point fuel feeding such as pump bearings.Stability and the energy-conservation aspect of said structure to pump operation is short of to some extent.For under High Temperature High Pressure, high rotating speed and large flow, high-lift operating conditions, problem is especially outstanding.
Summary of the invention
The object of this invention is to provide a kind of reliable, double shell sectional type horizontal multi-stage centrifugal pump that transfer efficiency is higher.
For achieving the above object, double shell sectional type horizontal multi-stage centrifugal pump of the present invention comprises drive end bearing parts, cylindrical shell, suction letter body, stator stage casing, impeller, pump shaft, balance tube parts, pump cover, balanced controls, liquid-discharging tube, non-driven-end bearing parts, be wherein positioned at the seal case inner cylinder of drive end bearing component ends and the end plate of seal case is affixed, seal case end plate and cylindrical shell affixed.In pump, stator and stage casing adopt integral structure, and guide vane, suction letter body are open architecture.
Adopt after said structure, compared with original structure, between seal case and body end surface, reduced and coordinated seam, reduced assembling difficulty, improved the pump housing and moved to obtain stability.In pump, stator and stage casing adopt integral structure, are convenient to integral installation, maintenance, detection.Guide vane, suction letter body all adopt open architecture, and gate vane channel, suction letter body entrance all can increase degree of finish by modes such as polishings, reduce hydraulic loss.
As a further improvement on the present invention, set up spindle nose oil pump in non-driven-end bearing component ends.Adopt this structure to carry out fuel feeding to the lubricating point place of pump bearing, gear-box and motor by spindle nose oil pump, ensure pump in the running, stable conveying oil pressure is provided, make it not be subject to low-voltage circuit fault effects, compared with former oil feed pump structure, safe, energy-conservation, improve the working efficiency of whole unit.
Advantage of the present invention is: compact structure, be convenient to installation, maintenance, detection; Reliable, efficiency is high, is applicable to petrochemical industry and other chemical industry products, High Temperature High Pressure, has the conveying of corrosivity or inflammable and explosive characteristic medium, also can be used as the use of large flow high-temperature high-pressure boiler feed water pump, diesel oil hydrogenation feed pump.
Brief description of the drawings
Fig. 1 is the overall structure schematic diagram of double shell sectional type horizontal multi-stage centrifugal pump of the present invention.
Fig. 2 is stage casing stator integrative-structure schematic diagram as shown in Figure 1.
Fig. 3 sucks letter body structure schematic diagram for open type as shown in Figure 1.
Fig. 4 is cylindrical shell and seal case Integral connection structure schematic diagram as shown in Figure 1
Fig. 5 is spindle nose oil pump structure schematic diagram as shown in Figure 1.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail:
As Fig. 1 shows, double shell sectional type horizontal multi-stage centrifugal pump of the present invention is made up of parts such as drive end bearing parts 1, cylindrical shell 2, suction letter body 3, stator stage casing 4, impeller 5, pump shaft 6, balance tube parts 7, pump cover 8, balanced controls 9, liquid-discharging tube 10, non-driven-end bearing parts 11, is wherein positioned at the seal case inner cylinder 2-1 of drive end bearing component ends and the end plate 2-2 of seal case welding, seal case end plate 2-2 and barrel soldering (as shown in Figure 2); In pump, stator and stage casing adopt integral structure, and guide vane, suction letter body are open architecture (as shown in Figure 3).Be connected with spindle nose oil pump 12(as shown in Figure 5 in the increase of non-driven-end bearing component ends).Due to the cylinder 2-1 of drive end seal case, end plate 2-2 and cylindrical shell are adopted to welded structure, reduce accumulated tolerance between part, increase pump head coupling stiffness, strengthen pump operation stability (as shown in Figure 4).Meanwhile, as carried Korrosionsmedium, seal case end plate can adopt flow passage components material, and seal case cylinder 2-1 can adopt Ordinary Steel material, cost-saving.Guide vane part adopts open architecture, and is cast as integrative-structure with stage casing, avoids the impact on waterpower due to casting deviation and casting degree of finish, fully ensures that vane inlet area and impeller outlet area meet production requirement.Suck letter body component and also adopt open architecture, reduce casting difficulty, improve pump efficiency.Gate vane channel, suction letter body entrance all can increase degree of finish by modes such as polishings simultaneously, reduce hydraulic loss.By spindle nose oil pump, the lubricating point place of pump bearing, gear-box and motor is carried out to fuel feeding, ensure pump in the running, stable oil pressure is provided, make it not be subject to the impact of low-voltage circuit fault and petrol station oil feed pump fault, there is safety, energy saving, reduce energy loss, improve whole unit efficiency.
The present invention has compact structure, be convenient to installation, maintenance, detection, reliable, efficiency high, this product is applicable to petrochemical industry and other chemical industry products, High Temperature High Pressure, has the conveying of corrosivity or inflammable and explosive characteristic medium, also can be used as the use of large flow high-temperature high-pressure boiler feed water pump, diesel oil hydrogenation feed pump.
Claims (2)
1. a double shell sectional type horizontal multi-stage centrifugal pump, comprise drive end bearing parts (1), cylindrical shell (2), suck letter body (3), stator stage casing (4), impeller (5), pump shaft (6), balance tube parts (7), pump cover (8), balanced controls (9), liquid-discharging tube (10), non-driven-end bearing parts (11), it is characterized in that: be positioned at the seal case inner cylinder (2-1) of drive end bearing component ends with the end plate (2-2) of seal case is affixed, seal case end plate (2-2) and cylindrical shell affixed; In pump, stator and stage casing adopt integral structure, and guide vane, suction letter body are open architecture.
2. double shell sectional type horizontal multi-stage centrifugal pump according to claim 1, is characterized in that: set up spindle nose oil pump (12) in non-driven-end bearing component ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310493404.4A CN104005995A (en) | 2013-10-21 | 2013-10-21 | Double-cylinder sectional type horizontal multilevel centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310493404.4A CN104005995A (en) | 2013-10-21 | 2013-10-21 | Double-cylinder sectional type horizontal multilevel centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104005995A true CN104005995A (en) | 2014-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310493404.4A Pending CN104005995A (en) | 2013-10-21 | 2013-10-21 | Double-cylinder sectional type horizontal multilevel centrifugal pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN104005995A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564784A (en) * | 2014-12-26 | 2015-04-29 | 珠海格力电器股份有限公司 | Pressure balance structure for fuel tank and air suction port of centrifugal compressor |
| US11092164B2 (en) | 2015-12-29 | 2021-08-17 | Baker Hughes Esp, Inc. | Non-welded suction chamber for surface pumping systems |
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| CN200989330Y (en) * | 2006-12-26 | 2007-12-12 | 重庆水泵厂有限责任公司 | Segmental symmetrical scroll guide ring multistage centrigfugal pump |
| CN101975168A (en) * | 2010-11-05 | 2011-02-16 | 浙江科尔泵业股份有限公司 | Horizontal axial-suction sectional multistage high-pressure centrifugal pump |
| CN202628534U (en) * | 2012-06-21 | 2012-12-26 | 大连深蓝泵业有限公司 | Small-flow double-cylinder horizontal multiple-stage centrifugal pump |
| CN202707624U (en) * | 2012-08-21 | 2013-01-30 | 沈阳鼓风机集团石化泵有限公司 | Small flow high-lift pump of hydrogenation device |
| CN202954981U (en) * | 2012-12-10 | 2013-05-29 | 大连深蓝泵业有限公司 | Horizontal middle-opened double-cylinder multistage centrifugal pump |
| JP2013213493A (en) * | 2012-03-05 | 2013-10-17 | Ebara Corp | Multi-stage pump |
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2013
- 2013-10-21 CN CN201310493404.4A patent/CN104005995A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200989330Y (en) * | 2006-12-26 | 2007-12-12 | 重庆水泵厂有限责任公司 | Segmental symmetrical scroll guide ring multistage centrigfugal pump |
| CN101975168A (en) * | 2010-11-05 | 2011-02-16 | 浙江科尔泵业股份有限公司 | Horizontal axial-suction sectional multistage high-pressure centrifugal pump |
| JP2013213493A (en) * | 2012-03-05 | 2013-10-17 | Ebara Corp | Multi-stage pump |
| CN202628534U (en) * | 2012-06-21 | 2012-12-26 | 大连深蓝泵业有限公司 | Small-flow double-cylinder horizontal multiple-stage centrifugal pump |
| CN202707624U (en) * | 2012-08-21 | 2013-01-30 | 沈阳鼓风机集团石化泵有限公司 | Small flow high-lift pump of hydrogenation device |
| CN202954981U (en) * | 2012-12-10 | 2013-05-29 | 大连深蓝泵业有限公司 | Horizontal middle-opened double-cylinder multistage centrifugal pump |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564784A (en) * | 2014-12-26 | 2015-04-29 | 珠海格力电器股份有限公司 | Pressure balance structure for fuel tank and air suction port of centrifugal compressor |
| CN104564784B (en) * | 2014-12-26 | 2018-01-19 | 珠海格力电器股份有限公司 | A kind of pressure balancing structure for being used for centrifugal compressed sump and air entry |
| US11092164B2 (en) | 2015-12-29 | 2021-08-17 | Baker Hughes Esp, Inc. | Non-welded suction chamber for surface pumping systems |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140827 |